PORTO, Portugal — Fábio Vieira scored early and Sérgio Oliveira struck late in the game as Porto beat Olympiakos 2-0 in the Champions League on Tuesday. 

It was the 100th victory for Porto in the European Cup and Champions League.

The win moved the Portuguese club to second place in Group C, behind Manchester City, which defeated last-place Marseille 3-0 in the other group match.

Vieira scored with a low shot from near the penalty spot in the 11th minute after Olympiakos captain Andreas Bouchalakis gave the ball away near the area.

"I worked hard for this," the 20-year-old Vieira said. "I deserved an opportunity and I'm happy to have scored my first goal in the Champions League."

Oliveira sealed the victory in the 85th with a header into the far corner.

"We lost by details," Olympiakos defender Rúben Semedo said. "We had a large part of the possession … many chances, but we did not score and Porto were better in both of the major chances they had on our goal. We have to learn from this game in order not to make the same mistakes again."

A few thousand fans were allowed into the match at the Estádio do Dragão. 

Porto s Sergio Oliveira celebrates after scoring his side s second goal during the Champions League group C soccer match between FC Porto and Olympiacos at the Dragao stadium in Porto, Portugal, Tuesday, Oct. 27, 2020. (Miguel Riopa, Pool via AP)

Porto defender Pepe, a former Real Madrid player, made his 100th Champions League appearance.

In the next round in November, Porto hosts Marseille and Olympiakos visits Manchester City.